package chen.web.util;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;

public class FileReadTest {

	static int codeLines = 0;

	static int whiteLines = 0;

	static int commentLines = 0;

	static int tatolLines = 0;

	static boolean bComment = false;

	public static void main(String[] args) {
		StringBuffer pathName = new StringBuffer("D:\\no-install\\eclipse\\workspace\\website\\src\\chen\\web");
		
		ComputeDirectoryAndFiles(pathName, 0);
		
		//ComputeNetFiles(pathName);
		System.out.println("Code Lines : " + (codeLines = tatolLines - commentLines - whiteLines));
		System.out.println("White Lines : " + whiteLines);
		System.out.println("Comment Lines : " + commentLines);

	}

	public static void ComputeDirectoryAndFiles(StringBuffer pathName, int level) {
		
		File directory = new File(pathName.toString());
		File[] files = directory.listFiles();
		String prefix = "";
		for (int i = 0; i < level; i++) {
			prefix += "** ";
		}
		if (directory.isDirectory()) {
			for (int i = 0; i < files.length; i++) {
				if (files[i].isFile() && files[i].getName().matches("^[a-zA-Z[^0-9]]\\w*.java$")) {

					computeLines(files[i]);
				}
				if (files[i].isDirectory()) {

					pathName.append("/" + files[i].getName());
					level++;
					ComputeDirectoryAndFiles(pathName, level);
					int start = pathName.toString().length() - files[i].getName().length() - 1;
					int end = pathName.toString().length();
					pathName.delete(start, end);

					level--;
				}
			}
		}
	}
	
	public static void ComputeNetFiles(StringBuffer netPath){
		try {
			File netDir = new File(netPath.toString());
			
			File[] files = netDir.listFiles();
			
			for(int i=0;i<files.length;i++){
				System.out.println(":"+files[i].getName());
			}
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
	

	public static void computeLines(File file) {
		BufferedReader bf = null;

		try {
			bf = new BufferedReader(new FileReader(file));
			String lineStr = "";
			while ((lineStr = bf.readLine()) != null) {
				// 总行数
				tatolLines++;
				// 计算空行
				whiteLines(lineStr);
				// 统计代码行数
				commendLines(lineStr);
				// 计算代码的行数
				// codeLines(lineStr);
			}
		} catch (FileNotFoundException e) {
			System.out.println("文件没有找到");
		} catch (IOException ee) {
			System.out.println("输入输出异常　");
		} finally {
			if (bf != null) {
				try {
					bf.close();
					bf = null;
				} catch (Exception e) {
					System.out.println("关闭BufferReader时出错");
				}
			}
		}
	}

	public static void whiteLines(String lineStr) {
		if (lineStr.matches("^[\\s&&[^\\n]]*$")) {
			whiteLines++;
		}

	}

	public static void commendLines(String lineStr) {

		// 判断是否是一个注释行
		// 这里是单行注释的如 /*..... */或/**.... */
		if (lineStr.matches("\\s*/\\*{1,}.*(\\*/).*")) {

			commentLines++;
		}
		/**
		 * 这里是多行注释的
		 */
		// 这里的是当开始为/**或/*但是没有 */ 关闭时
		else if (lineStr.matches("\\s*/\\*{1,}.*[^\\*/].*")) {

			commentLines++;
			bComment = true;
		} else if (true == bComment) {

			commentLines++;
			if (lineStr.matches("\\s*[\\*/]+\\s*")) {
				bComment = false;
			}
		} else if (lineStr.matches("^[\\s]*//.*")) {

			commentLines++;
		}

	}
}